Russula adusta

Russula adusta, commonly known as the blackening brittlegill or blackening russula, is a species of gilled mushroom. It is a member of the Russula subgenus Compactae. The cap is brown to gray and somewhat shiny, with a mild taste and, reportedly, an odor of empty wine barrels. It has a propensity to turn black from cutting or bruising and has white spores. Similar species include Russula albonigra and R. densifolia. Russula adusta is found in woodlands of Europe and North America, growing under conifers....read more on Wikipedia.